Meaning of Folders and Directories
 

I am new at linux and started to learn commands etc... but i wonder about folders contents.There are lots of folders in linux and each of this has lots of contents can anybody tell me about theese folders and directories contents
example
-------------
/etc directiories contents ............
/var directories contents .............


and if i install a program to which directory it is installed?

Thanks

someone just asked the same type of question like 8 posts previous to yours --> go here and check the links given in that post...

ah, http://gd.tuwien.ac.at/linuxcommand.org/lts0040.php

have fun! :)